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Tailoring the pressure-drop in multi-layered open-cell porous inconel structures

Oun, Hatem; Kennedy, Andrew R.

Authors

Hatem Oun

Andrew R. Kennedy



Abstract

This study investigates the pressure-drop behaviour associated with airflow through bulk and structurally tailored multi-layered, open-cell porous Inconel structures over a wide airflow velocity range (0–50 m s-1). The effect of airflow velocity on the pressure-drop behaviour as a function of the sample thickness is presented and related to the flow behaviour corresponding to the relevant flow regimes (Darcy, Forchheimer, Turbulent and Postturbulent). Entrance effects are highlighted as a source of the pressure-drop increase for porous structures with air gaps, regardless of their sizes, as long as they are larger than those generated by loosely-stacked structures. The pressure-drops for gapped porous structures and the mathematical-summation of the pressure drop for the corresponding individual components, were in very good agreement, at lower airflow velocities. The potential for mass-efficient porous structures, providing a high pressure drop, was demonstrated using multiple thin porous laminates separated by air gaps.

Journal Article Type Article
Journal Journal of Porous Materials
Print ISSN 1380-2224
Electronic ISSN 1573-4854
Publisher Springer Verlag
Peer Reviewed Peer Reviewed
Volume 22
Issue 6
APA6 Citation Oun, H., & Kennedy, A. R. (in press). Tailoring the pressure-drop in multi-layered open-cell porous inconel structures. Journal of Porous Materials, 22(6), https://doi.org/10.1007/s10934-015-0046-2
DOI https://doi.org/10.1007/s10934-015-0046-2
Keywords Single-phase flow ; Inconel multi-layer porous structures ; Thickness effect ; Material-efficient structures ; Air gap effect
Publisher URL http://link.springer.com/article/10.1007%2Fs10934-015-0046-2
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
Additional Information The final publication is available via Springer at http://link.springer.co...007%2Fs10934-015-0046-2

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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